Biogas from

Poultry Waste – a case

Presented by Theo Bijman, Dorset symposium June 2014 1

Nijhuis Water Technology BV

2

Innovatieweg 4, 7007 CD te Doetinchem 2

Ondanks het feit dat deze informatie door ons met zorg is samengesteld, dient te worden vermeld dat deze informatie, van algemene aard,

deels van derden is verkregen, geheel vrijblijvend en uitsluitend voor geadresseerde bestemd is.

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Deze informatie is slechts een uitnodiging om in onderhandeling te treden.

WHAT WE DO

WHY WE DO IT

Water Treatment l Recycling l Waste to Valuable

Heat

Energy Biofuels

Animal feed

Ingredients Process water Fertilizers

Algea

Green gas

Phosphorus

Nitrogen

Oil

Fats

Starch Waste water Proteins Waste

Manure

Realizing the value of waste & water

Anaerobic Digestion concepts

Basics of chicken litter digestion

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• Every kg of organic matter will yield 0,5 m3 of biogas.

• Biogas contains between 50 – 60% CH4 and has a heating value of 5 to 6 kW.

• For comparison: 1 litre of diesel has a heating value of 10.4 kW.

• 1 m3 of Natural Gas has a heating value of 9.3 kW.

• 1000 kg of Chicken litter (55% DM , containing 42% OM) will yield approx. 200

m3 biogas

Basics of chicken litter digestion

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• 1000 kg of Chicken litter (50% DM) contains approx 27 kg of Nitrogen

• with 10 kg in soluble form NH3-N.

• NH3-N inhibits the anaerobic digestion when >4kg/m3.

• Solution: -Dilution with 5 m3 water

• - Removal of ammonia through stripping.

• Biogas from chicken litter will produce biogas with high H2S levels (>2000 ppm).

• This is corrosive and needs to be removed in a scrubber.

• It takes about 30 days for complete digestion of chicken litter.

• A digester tank of 2000 m3 can handle approx. 17 ton of chicken litter/day.

• This would give you 3400 m3 biogas.

• 1 m3 of biogas in a biogas engine can produce approx. 2.1 kWhe of electricity

and 2.5 kWth heat

Basics of chicken litter digestion

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• Project :

• Ukraine: - 134 ton of chicken litter

• - 107 ton of Sorghum

• - 100 ton of sludge and waste streams

• from poultry slaughterhouse

• - 450 ton of waste water for dilution.

Basics of chicken litter digestion

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Production: 2200 m3 biogas/hr. 5 MWe CHP + Biogas towards boiler room Heating for chicken Barns Investment: - € 13 million Revenues: - € 3.6 million/yr - Heating - 5000 ha of improved crop yields

Basics of chicken litter digestion

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• The advantages of anaerobic digestion are:

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• Generation of “green power”.

• Improved manure composition and less odour

• No acidification of the soil as digistate has a pH of 8

• Higher availability of nutrients, higher crop yields

• Reduction in the emission of greenhouse gases

• Contribution to a sustainable agricultural sector

Questions ?

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